Objective: Evaluation of the five-year follow-up of patients treated for clear-cell renal carcinoma in dependency on its characteristic and extension. PATIENTS' COHORT AND METHODS: Retrospective analysis of five-year follow-up of 269 patients treated for clear-cell renal carcinoma in dependency on T, N, M and clinical tumor stage; presence of lymphatic and distant metastases, cellular grade and tumor necrosis. Tumor-specific surviving is presented on Kaplan-Meier curves.
Results: Five-year patients surviving with tumor T1, T2 and T3 were 91.8%, 70.7% and 34.6% respectively. Surviving patients without lymphatic metastases was 85%; with metastases was 6.9%. Surviving patients without distant metastases was 84.1%; with metastases was 0%. Surviving of patients with clinical tumor stage I, II, III and IV were 94.6%, 83.8%, 48.7% and 0% respectively. Surviving of patients with tumor cellular grade G1, G2, G3 and G4 were 87.5%, 95.5%, 64.2% and 27.6% respectively. Surviving patients without tumor necrosis was 92.4%; with metastases was 31.9%.
Conclusion: Tumor size and the presence of metastases are very significant factors to patient survival. Histological characteristics as a nuclear grade and a tumor necrosis have been important prognostic factors for the future of the patient. Early diagnosis and aggressive surgical treatment are the most important for the positive course of the disease.